JPH0662124A - Weighted termination method in exchange - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a weighted call reception method in a switching system. When an incoming call is received and the called party is busy, the subscriber of the class corresponding to the caller is called, and the called party is unknown. The purpose is to make the call to the subscriber of the class corresponding to the caller in the department to make the call more efficient. A table for converting a terminal number of a telephone or the like in an exchange into a group to which a subscriber belongs and a table for storing an important class of a subscriber of each terminal number of each group are provided.
When the other terminal is busy for the outgoing call using the terminal number from the calling terminal, the important class of the subscriber of the calling terminal is identified and the important class of the subscriber of the called terminal number is identified.
A terminal number of a class equivalent to the important class of the identified calling terminal is selected as a destination using the importance table,
In connection control with the selected terminal number as the call destination, when the call destination is busy, the connection control is performed by discriminating the terminal number of the lower (upper) important class.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighted incoming call system in an exchange. Exchanges, especially PBXs (private exchanges)
In this case, when the telephone subscriber (each employee of the company etc.) of the called party is absent, a method of receiving the call to other subscribers related to the business is adopted, but it is desirable to select the called party properly. ing.

[0002]

2. Description of the Related Art In a conventional exchange, a method called a group (representative) incoming call is used. That is, the other party dials a group (representative) number representing a department or section to receive an incoming call, and in that case, there are the following five methods as a method for selecting an incoming call destination.

Pilot method Circular method Termination method Switchback method Even distribution method The above-mentioned call transfer methods are shown in FIGS. 17 and 18, which are explanatory diagrams (1) and (2) of the conventional group call transfer method. It demonstrates using.

FIG. 17A. Is the pilot system (above)
When a call is received by the pilot number (representative number) 2000, the callee is transferred to the next number 2001 only when the telephone number 2000 is busy. In this case, it is called to slide in a normal order (number order). If this number 2001 is busy, it slides to number 2002. Further number 200
If 2 is busy, slide to number 2003. However, when the call arrives directly at the number 2001 which is not the pilot number, the call does not slip even if the call is busy.

The next circular method (above) is shown in FIG.
B. No matter which extension number in the group receives the call, if the telephone of that number is busy, the destination is transferred in the direction of the arrow in the order of the ring determined by the extension number, and a maximum of one round is made. To do.

The termination method (above) is based on the C.I. Order the numbers in the group as shown in
Slave from the incoming call extension to the lowest to the lowest. Furthermore, the switchback method (above) is based on the A. As shown in, slide down to the bottom of the incoming extension, and if there is still no available incoming extension, slide up to the top of the incoming extension. Finally an even distribution method (above)
18 in FIG. As shown in, the incoming extension is selected in the direction in which the number of incoming calls for each extension in the group becomes equal.

[0007]

In the above-mentioned conventional group incoming call system, the incoming call is forwarded to the receiving side group in a predetermined order regardless of who the caller is.
The order of arrival is fixed.

On the other hand, for communication during work, the person directly in charge speaks, for example, the person in charge of another department, the section managers are section managers, or when there is no section manager, a subordinate who reports directly to him, or a superior who is directly above him. In the middle case, we often talk to someone who understands the requirements.

Therefore, it was necessary to remember the name and telephone number of each person in charge. Further, when the person in charge of the purpose is busy, the incoming call slips in the order determined by the receiving side, and thus the incoming call does not always reach the appropriate person.
Furthermore, when an incoming call from a VIP (important person) or the like cannot be prevented from reaching an unsuitable person such as a new employee or a temporary employee due to the above-mentioned group incoming call, there are cases in which a trouble may occur during reception.

According to the present invention, when an incoming call arrives at a subscriber whose class corresponds to the caller when the called party is busy and cannot answer, and when the specific party is unknown, the class corresponding to the caller in the department is received. The purpose is to improve the efficiency of call transfer by making the subscriber receive the call.

[0011]

FIG. 1 is a block diagram showing the first principle of the present invention, and FIG. 2 is a block diagram showing the second principle of the present invention. The first principle configuration shown in FIG. 1 is a principle configuration for performing weighted incoming call when dialing an extension number to make a call.
Reference numeral 1 is an exchange, 2 is a weighting control unit, and 3 is a memory.
In the weighting control unit 2, 2a is a receiving terminal connecting means,
Reference numeral 2b is a calling terminal important class identifying means, 2c is a called terminal important class identifying means, 2d is a calling terminal-compatible called destination discriminating means, and 2e is a discriminating called destination connecting means. In the memory 3, 3a is a group table that stores the link information from the terminal number to the group number and the in-group important class table, which will be described later, and 3b is important for each group such as the position of the subscriber who uses each terminal in each group. This is a group-specific important class table in which important classes (weights) representing degrees are stored in order of class.

The second principle configuration shown in FIG. 2 is a principle configuration for performing a weighted incoming call when a call is made by dialing a department code. In FIG. 2, 1 and 3 represent an exchange and a memory as in FIG. 1, and 4 represents a group weighted incoming call control unit.

In the group weighted incoming call control unit 4,
Reference numeral 4a is a calling terminal important class identifying means, 4b is a terminal group corresponding terminal number identifying means, and 4c is a destination connecting means. Further, 3a 'in the memory 3 is a group identification table for identifying a group number from a terminal number, 3c is a link table storing link information from the group number to the important class table for each group 3b, and 3b is for each group as in FIG. This is an important class table.

The present invention identifies the important class of the subscriber of the calling terminal when the calling terminal makes a call from the calling terminal by the terminal number and identifies the important class of the subscriber of the calling terminal, and is equal or lower (higher) from the group including the calling terminal number. When the terminal of the important class of) is connected as a callee and the callee is busy, the lower (higher) terminal number is selected next. When a calling terminal makes a call using a group number, the terminal number of a subscriber equivalent to the important class of the subscriber of the calling terminal is selected from the terminal numbers of the important classes in the group and is set as the destination. If busy, select a lower (upper) partner. Further, when the calling terminal designates a certain range within the important class as the destination, the other destination is selected within the designated range while the destination is busy.

[0015]

In FIG. 1, when a calling terminal uses a terminal number as a destination to make a call to the exchange 1, the called terminal connecting means 2a of the weighting control unit 2 controls the connection to the terminal number, and the terminal is busy. The calling terminal important class identifying means 2b is activated to identify the calling terminal number by the accommodating position of the calling terminal. The important class of the calling terminal is identified by referring to the group table 3a and the group-specific important class table 3b of the memory 3 using the identified calling terminal number. Next, the receiving terminal important class identifying means 2c is driven, and the important class of the subscriber of the terminal number destined to the calling terminal is determined using the tables 3a and 3b of the memory 3.

After that, as the destinations corresponding to the important class of the calling terminal, the terminals of the class equivalent to the important class of the called terminal in the group of the called terminals are retrieved using the group-specific important class table 3b. At this time, if a terminal of the same class is not registered, a lower (or higher) terminal of the same group is taken out as a destination, and the receiving terminal connecting means 2a controls the connection. If a terminal of the same class or a lower (upper) terminal is connected and the terminal is busy, the discriminant destination connection means 2e selects a lower (upper) terminal as a destination and controls the connection. I do.

When the destination terminal is busy and another terminal in the group of the destination terminals is selected as the destination, the allowable range that can be selected as the destination corresponding to the important class of the source terminal is set in advance. It is possible to control to select sequentially within the range. This permissible range is determined according to the important class stored in the group-specific important class table 3b, and this control is executed by the callee's callee's callee's destination determining means 2d.

Next, in the configuration of FIG. 2, the calling terminal sends a call to the exchange 1 using the group number as the destination. In response to this, the group weighted incoming call control unit 4 activates the calling terminal important class identifying means 4a (the same means as 2c in FIG. 1) and refers to each table 3a ′, 3c, 3b of the memory 3 to refer to the calling terminal. Determine the important classes of. Then, the corresponding terminal number identifying means 4b within the incoming group is activated, and the link table 3c and the group-specific important class table 3b are referred to by the destination group number received from the outgoing terminal.
From the important classes in the destination group, the terminal number of the class equivalent to the important class of the calling terminal is determined. Next, the destination connection means 4c is driven to make a connection with the determined terminal number as the destination. When this destination is busy, the call is made from the same group using the group important class table 3b. Equivalent to or lower than the class of the terminal (or higher)
Determine the terminal number of and connect to the destination.

Also in this incoming call system, the in-call-group-corresponding terminal number identifying means 4b can decide the incoming call allowable range according to the important class and select the incoming call destination within that range.

[0020]

FIG. 3 shows an example of an important class and group configuration given to each terminal accommodated in an exchange in which the present invention is implemented, and the exchange is an example of PBX.

Referring to FIG. Shows an example in which the important classes of 1 to 9 are given to each post corresponding to the hierarchy of the organization of the company. In addition, B. Shows an example of the relationship between an organization and a terminal in a certain department "XY Sales Department" when divided into groups. B. In this case, the department code (group number) of the “XY sales department” is “1571” and the extension number (telephone number) of the department manager is “5700”. The department code of the “first XY section” under the control of this manager is “0535”,
Phone number "571" for each terminal used by section manager and section staff
0 ”,“ 5711 ”...“ 5714 ”are added,
Similarly, for the “second XY section”, the department code and the telephone number are given as shown in FIG.

FIG. 4 shows an example of the structure of each table provided in the exchange accommodating the terminal shown in FIG.
40 is a group table for identifying a "department code" (group number) indicating which department each extension number belongs to, and "department" and "section" below it are different department codes as shown in FIG. Is given. Reference numeral 41 is a link table in which link information for linking from the department code to the department extension pool is stored. Reference numeral 42 denotes a department-specific extension pool (the same as the group-specific important class table 3b in FIGS. 1 and 2) in which the extension numbers and the important classes of the subscribers for each department are stored in the order of the important classes.

FIG. 5 is a block diagram of an embodiment of the exchange (PBX), wherein 50 is the exchange and 40 to 42 are the same as those in FIG.
Tables 40 to 42 shown in FIG. Reference numeral 43 is extension data that mainly stores the extension number, important class, allowable range, etc. of the calling terminal, and reference numeral 44 is a control device that performs incoming control. 51 to 58 are extension telephones, and in this state, 5
Reference numerals 1 and 52 are telephones on the calling side, and 53 to 58 are telephones on the receiving side.

An explanatory view of the extension data 43 is shown in FIG. The extension data 43 is used to identify the extension number, the important class, etc. from the accommodation position information of the extension telephone. Since the extension number can be identified from the accommodation position as the basic function of the exchange (used for the connection control and billing function), the important class can also be identified by referring to the tables 40 to 42 using the extension number. However, by using the extension data 43, the operation of identifying the important class can be easily performed.

In the case of FIG. 6, an address link 60 that is accessed by the accommodation position number of the calling telephone is provided, and when the address link 60 is referenced, the address of the data of the corresponding extension telephone in the extension data 43 is obtained. When accessed by the address, each data such as the corresponding extension number can be obtained. An allowable range (data used in an incoming call system considering the allowable range) can be simultaneously stored as extension data. This extension data 43 is
It can also be accessed by the extension address link 61.

The processing flow of the embodiment in which the weighted incoming call is controlled by the control device 44 of the exchange 50 of FIG. 5 and each incoming call method is executed will be described below. FIG. 7 is a processing flow of the weighted forward order call reception method, FIG. 8 is a processing flow of the weighted reverse order call reception method, and FIGS. 9 and 10 are operation examples of the weighted forward order call reception method and the weighted reverse order call reception method, respectively.

When an incoming call is to be made by the weighted forward order incoming call method, a special number "w" is added to the beginning of the extension number to distinguish it from other incoming call methods. However, if only the forward order call method is used as the call reception method, it is not necessary to add a special number.

First, in FIG. 7, when an incoming call by the special number "w" and the extension number of the other party occurs (S1 in FIG. 7), it is judged whether the other party is busy (S2 in the same figure), and if it is available, the process of receiving the other party If busy, the important class of the extension is extracted (S3). At this time, the important class of the originating extension is extracted by accessing the extension data (FIG. 6) by using the accommodating position information because the accommodating position of the calling telephone is detected in the normal operation of the exchange. Next, the department code is extracted from the incoming extension number sent at the time of the incoming call by referring to the group table 40 (FIG. 5) (S4 in FIG. 7).

Further, the extension pool 42 for each division (FIG. 5) is extracted from the division code (S5 in FIG. 7), and the extension of the class equal to or lower than the important class of the transmission extension is extracted from the pool (FIG. 7). S6). Subsequently, it is determined whether or not there is an extracted extension (at step S7). If there is no extension, a process for displaying busy is displayed on the outgoing extension. If there is, at step S8 it is determined whether or not the extracted extension is busy. ) If there is a free space, the incoming call processing is performed, but if busy, the process returns to S6 and an extension whose importance class is equal to or lower than the extension selected earlier in the department extension pool is extracted. Thereafter, similarly, the important classes sequentially extract lower-order extensions and receive calls.

FIG. 9 shows an operation example of this weighted forward-order incoming call system.
Shown in. In this example, it is assumed that the important class of the first XY section of the XY section is assigned as shown in the figure. The figure shows the case where the YY section manager of the YY department dials the number "5710" of the first sales section manager who is the head of the XY sales section shown in FIG. 3 after the special number "w". At this time, the first XY section manager When busy, we have not searched for an equivalent class corresponding to the important class "5" of the outgoing extension, so select the lower class chief (important class 7) as the destination as shown in. . When this supervisor is busy, the next person in charge (important class 8) is extracted and the extension of the lower important class is sequentially selected. In this case, the number (571) of the person in charge (important class 8) is selected.
3 ”. Further, in the example of FIG. 9, another ZZ section chief instructs the forward incoming call system and the number of the first XY section "571".
When "1" is dialed and the extension number is busy, the number "5712" which is lower in importance class is selected.

FIG. 8 shows a weighted reverse sequence call reception method. When an incoming call is to be made by the weighted reverse order incoming call method, a special number "x" is added to the beginning to distinguish the other incoming call methods and the extension number is dialed. However, if only the reverse order call method is used as the call reception method, it is not necessary to add a special number.

In FIG. 8, when an incoming call occurs with the special number "x" and the extension number of the other party (S1 in FIG. 8), it is determined whether the other party is busy (S2). After this, steps S3 to S5 are performed as shown in FIG.
The same processing as S3 to S5 is performed, and in S6, an extension of the same class as or a higher class than the important class of the transmission extension is extracted from the extension pool. Thereafter, the same processes as S7 and S8 in FIG. 7 are performed in S7 and S8.
7 is different from the case of FIG. 7 in that when the extracted extension is judged to be busy, the procedure returns to S6 and the extension of the higher class is extracted.

FIG. 10 shows an example of the operation of this weighted reverse order incoming call system. In this example, when the person in charge of the ZZ section (important class 8) attaches the special number "x" and dials the number "5713" of the person in charge of the first XY section, as shown in, when the number is busy, Thus, the number "5712", which is the class equivalent to this person in charge, is extracted. At this time, the number "5712"
Is busy, the important class is extracted as indicated by the number of the higher-ranking chief (important class 7) and the call arrives at that number.

FIG. 11 shows the processing flow of the incoming call within the weighting range, and FIG. 15 shows an example of its operation. When the caller wants to make an incoming call by the weighted range incoming call system, the caller dials the extension number with a special number "y" at the beginning to distinguish it from other incoming call systems. However, if only the incoming call method within the weighting range is used as the incoming call method, it is not necessary to add a special number.

In FIG. 11, when an incoming call by the special number "y" and the extension number of the other party occurs (S1 in FIG. 11), it is determined whether the other party is busy (S2). Next, the important class and the allowable (specified) range of the outgoing extension are extracted (at step S3). These pieces of information are stored in the extension data 43 that stores the extension number of the calling side as shown in FIG. 6, and the information is extracted. In S4 and S5 after this, S in FIG. 7 and FIG.
The same processing as 3 to S5 is performed, and then the operation of extracting the extension from the extension pool in the order of registration is performed (S6 in FIG. 11). It is judged whether or not there is an extension extracted by this (S7).
If it does not exist, busy processing is performed. If it exists, it is determined whether the important class of the extracted extension is within the designated range of the calling extension (S.
8). That is, it is determined whether or not the difference between the calling side important class and the extracted important class of the extension is within the range specified as the allowable range.

In this judgment, if it is found that the extension is out of the specified range, the process returns to S6 to extract another extension, and if it is within the range, it is determined whether the extracted extension is busy (S9) and it is empty. If there is, the incoming call process is performed, and if busy, the process returns to S6.

FIG. 15 shows an example of the operation of the incoming call method within the weighting range. In this example, the allowable range is set to (2) by the business manager (important class 3). Using this telephone, when you dial the number "5700" of the XY manager (important class 4) with the special number "y" attached as shown in, when the other party is busy, as shown in The section manager (important class 5) is extracted as the destination.

If the section manager's telephone is vacant, an incoming call arrives, but if busy, the next chief (important class 7) is extracted. However, since the important class of this supervisor is outside the range of (2) of the above-mentioned allowable range, the number of other allowable range is searched for without receiving the incoming call. Also, as this business manager indicates,
Even if the user dials "y-5710" including the section manager's number and the call is busy, the allowable range is exceeded, and no incoming call is made to the subordinate chief.

Next, the processing flow of each method of weighted call reception using the department code will be described with reference to FIGS.
FIG. 12 is a process flow of the department code weighted forward reception system, FIG. 13 is a process flow of the department code weighted reverse sequence reception process, and FIG. 14 is a process flow of the department code weighted range reception system.

In the case of using the three incoming call systems with the division code weighting, the following dialing is performed. (1) Department code weighted forward incoming call special number "z
1 ”+ department code (2) department code weighted reverse order incoming call special number“ z
2 ”+ department code (3) department code Weighting range incoming call special number“ z
3 ”+ department code First, the department code weighted forward order call reception method of (1) is shown in Fig. 12.
To explain using the processing flow shown in, when an incoming call by the special code "z1" and the department code occurs (S1 in FIG. 12),
The important class of the outgoing extension is extracted (at step S2). The important class of the outgoing extension can be extracted from the extension data 43 shown in FIG. Next, the department code is extracted from the dial information (S3 in FIG. 12) and the department extension pool is extracted (S4). This extraction is performed by the link table 4 in FIGS.
1 to obtain the link information for accessing the extension pool (including a plurality of extension numbers included in the same department code and each important class) as shown by 42 in FIG. 5 corresponding to the department code. .

Extensions of the same class as or lower than the important class of the originating extension are extracted from the extension pool accessed by this link information (S5 in FIG. 12). Thus, it is determined whether or not there is an extracted extension (at step S6). If there is no extension, a process of notifying the calling extension of busy is performed, and if there is, it is determined at step S7 whether the extracted extension is busy. If there is an empty space, the incoming call process is performed. If the line is busy, the process returns to S5, and an extension whose importance class in the same extension pool (within the same department) is the same as or next to the transmission extension is extracted.

FIG. 16 shows an operation example of the department code weighted forward order incoming call system. In the example of FIG. 16, the chief of ZZ section (important class 7) attaches a special number "z1" to the department code "053".
This is an example of dialing "5". In this case, the dialed department code extracts the department of the XX section XX section, and the extension pool of that department assigns the extension "5711" of the chief as the extension of the same class as the important class (7) of the outgoing extension. It is extracted, but since the extension is busy, the extension "5712" in charge of its lower class is extracted. In this case, since the extension "5712" is also busy, the extension "5713" in another charge is extracted. Receive an incoming call.

Next, in the processing flow of the department code weighted reverse order call reception method shown in FIG. 13, an incoming call by the special number "z2" and the department code occurs (S1 in FIG. 13), and the same processes S2 to S4 as in FIG. 12 are performed. To be executed. The extension pool extracted in S4 extracts an extension of the same class as or a higher class than the important class of the transmission extension (S5).

That is, unlike the above-described call reception method of FIG. 12, the extension of the higher class is extracted when there is no extension of the same class in S5, and the subsequent processing of S6 and S7 is also S6 and S7 of FIG. Is the same as.

Next, the processing flow of the department code weighted range incoming method will be described with reference to FIG. Special number "z
3 ”and the department code cause an incoming call (S in FIG. 14).
1), similar to S2 of FIG. 11 (weighted range incoming method), the important class and allowable range of the outgoing extension are extracted (S2). Next, as in FIGS. 12 and 13, S3 and S4 are performed.
Is processed. After that, the extension lines are extracted in the order of registration in the department extension pools extracted by the process of S4 (S5 of FIG. 14). Thereafter, in S6 to S8, the same processing as S7 to S9 in FIG. 11 is sequentially executed.
In particular, in S7 of FIG. 14, by determining whether or not the important class of the extracted extension is within the designated range of the outgoing extension, incoming call control within the range in the department code weighting is performed.

[0046]

According to the present invention, when communication is performed for business purposes by giving an important class (weighting) of a subscriber to a terminal such as a telephone of an exchange to control incoming calls, the partner specified by the number Even when the caller cannot answer the call, the call can be received to another appropriate terminal corresponding to the important class of the calling subscriber. Further, even if the other party is unknown, if a group such as a department is designated to make a call, a call destination corresponding to the important class of the caller can be selected from the group to receive the call. Further, by designating the allowable range, it is possible to prevent the possibility of giving an inappropriate response to the calling subscriber.

Therefore, according to the present invention, it is possible to improve the serviceability to the caller, prevent the occurrence of troubles on the receiving side in terms of handling, etc., and improve the efficiency of telephone transfer.

[Brief description of drawings]

FIG. 1 is a first principle configuration diagram of the present invention.

FIG. 2 is a second principle configuration diagram of the present invention.

FIG. 3 is a diagram showing an example of an important class and group configuration given to each terminal accommodated in the exchange in which the present invention is implemented.

FIG. 4 is a structural example of each table provided in the exchange that accommodates the terminal shown in FIG.

FIG. 5 is a block configuration diagram of an embodiment of an exchange (PBX).

FIG. 6 is an explanatory diagram of an extension table.

FIG. 7 is a processing flow of a weighted forward-order incoming call method.

FIG. 8 is a processing flow of a weighted reverse sequential call reception method.

FIG. 9 is an operation example of a weighted forward sequence call method.

FIG. 10 is an operation example of a weighted reverse sequential call reception method.

FIG. 11 is a processing flow of a weighted range incoming method.

FIG. 12 is a processing flow of a department code weighted forward incoming call system.

FIG. 13 is a processing flow of a department code weighted reverse call reception method.

FIG. 14 is a processing flow of an incoming call method within a department code weighting range.

FIG. 15 is an operation example of a weighted range incoming call system.

FIG. 16 is an operation example of a department code weighted forward call reception system.

FIG. 17 is an explanatory diagram (1) of a conventional group call transfer method.

FIG. 18 is an explanatory view (No. 2) of a conventional group call transfer method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 exchange 2 weighting control section 2a incoming terminal connecting means 2b outgoing terminal important class identifying means 2c incoming terminal important class identifying means 2d outgoing terminal corresponding incoming call destination identifying means 2e identifying incoming call destination connecting means 3 memory 3a group table 3b group important class table

Claims (4)

[Claims] 1. A weighted incoming call method in a switching system, which is a table for converting terminal numbers of telephones and the like accommodated in the switching system into groups to which subscribers belong, and assigns to each subscriber of each terminal number in each group for each group. Equipped with a group-specific important class table that stores the defined important classes (weightings) in order of class, and a weighting control unit that is activated when the calling subscriber makes a call using the destination terminal number when the other terminal is busy. The weighting control unit identifies the important class of the subscriber of the calling terminal, identifies the important class of the subscriber of the called terminal number, and receives the terminal number of the same class as the important class of the identified calling terminal. As a destination, the importance level table is selected, and in the connection control with the selected terminal number as the destination, when the destination is busy, the important class is further lowered. Weighting the incoming system in exchange, characterized by the connection control to determine the terminal number of the (upper). 2. A weighted call reception system in a switching system, wherein a table for converting terminal numbers of telephones and the like accommodated in the switching system into groups to which subscribers belong, and to each subscriber of each terminal number in each group for each group The exchange is provided with an important class table for each group in which assigned important classes (weightings) are stored in order of class, and a link table for converting a group number into link information to the importance table. A group-weighted incoming call control unit that is activated for outgoing calls using a group number is provided, and the group-weighted incoming call control unit identifies the important class of the subscriber of the calling terminal, and the destination terminal equivalent to the identified important class. Select a number using each table above, and the destination is busy in connection control with the selected terminal number as the destination. Weighting the incoming system in exchange, characterized by further important class connection control to determine the terminal number of the lower (upper) in the. 3. The extension data according to claim 1 or 2, wherein when selecting a destination, a range of important classes is set which is allowed to be selected as a destination corresponding to the important class of the calling terminal. , Weighted call reception in a switch characterized in that when a calling terminal makes a call requesting selection within an allowable range, it judges whether the destination is within the allowable range and only receives the call when within the allowable range. method. 4. The calling terminal according to claim 1, wherein the calling terminal is a lower rank (upper rank) of the important class by weighting.
To the destination, or to control the destination to a lower (upper) level of the important class by group weighting. Depending on the selection of whether to request control to limit incoming calls or to make a call with a corresponding special number, the exchange performs a corresponding incoming call control based on the special number. method.